<?php
$a=array(111,"222",'name'=>'张三','age'=>18,1000=>333,"444",);
for ($i=0;$i<6;++$i) {
    echo $i, '. ', $a[$i], "\n";
}
    foreach ($a as $k=>$v){
echo  $k,': ',$v,"\n";
    }
    echo "仅仅显示value的值：\n";
    foreach ($a as $value){
        echo  $value,"\n";
    }

